/Engine/Plugins/Enterprise/DataprepEditor/Source/DataprepCore/Public/DataprepActionAsset.h
Add a copy of the step object to the action
The index of the added step or index none if the step is invalid
int32 AddStep ( const [UDataprepParameterizableObject](API\Plugins\DataprepCore\UDataprepParameterizableObject) * StepObject )